The younger midfielder was introduced off the bench throughout the weekend’s 3-0 victory over Brentford and turned the youngest-ever Premier League player at the age of 15 years and 181 days.
Liverpool’s Harvey Elliott beforehand held the record, having made his senior debut for Fulham in 2019 at the age of 16 years and 30 days.
While acknowledging that Nwaneri is clearly deserving of being handed his alternative for the Gunners’ senior crew, ex-Liverpool man Murphy has warned of the detrimental impression it might have on his development.
Speaking to talkSPORT Breakfast, Murphy said: “I’m not satisfied that it’s the most effective transfer for a younger player, I’m actually not.
“He’s clearly an excellent expertise and doing nicely in coaching and impressing everybody however absolutely they’ve acquired other 18, 19, 20-year-olds who’re additional forward of their improvement and might have gotten on the bench.
“I in all probability suppose it’s trying to keep a younger famous person blissful which is what managers do, I get that, however I might be extra involved with what that may do.
“You can elevate a 15 or 16-year-old to a position that turns into very troublesome for them to deal with mentally as a result of they’re already changing into a famous person. I think about his Instagram went up by about 300,000 followers in a day!